Nut-lock



-(No Modem" P. J. DAMBACH' & J. S. HANNAN.

NUT LOCK.

Patented Mar.v 15, 1887.

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NIT-ED STATES PATENT FFICEs PHILIP J ACOB DAMBACH AND JOHN S. HANNAN, OFSHAYVNEE, OHIO.

NUT-LOCK.

SPECIFICATION forming part of Letters Patent No. 359,385,- dated March15, 1887.

Application filed November 9, 1886. Serial No. 218,406. (No model.)

To all whom, it mcty concern.-

Be it known that we, PHILIP J AOOB DAM- BAOH and JOHN S. HANNAN,citizens of the United States, residing at Shawnee, in the county ofPerry and State of Ohio, have invented new and useful Improvements inNut- Locks,of which the following is aspecification.

This invention has for its object to provide novel and efficient meansfor locking nuts on screw-bolts for securing various objectssuch as thefish-plates of railway-rails.

Theinvention consists in the features of construction and combination ofdevices herein-, after described and claimed, reference being made tothe accompanying drawings, inwhich-- Figure 1 is a side elevationshowing the invention applied to the bolt and nut for securing thefishplates of a railway-rail; Fig. 2, a'

sectional view taken on the line as 00 of Fig. 1; Fig. 3, detail viewsof the ratchet-disk and the cap for the nut; Fig. 4, a detailperspective view of the flanged plate in which the ratchetdisk isswiveled; and Fig. 5, a detail perspective view showing the cap adaptedfor a square or four-sided nut.

In order to enable those skilled in the art to make and use ourinvention, we will now describe the same in detail, referring to thedrawings, where- The numeral 1 indicates a square or similar shapedplate having its' top and side edges provided with lateral flanges 2,torest against the fish-plate 3, and form in connection there with and thebase or flange of the rail or other object a closed casing. A pawl, 4,is pivoted to the inside of the plate, andisfurnished with a tail orfinger piece, 5, projecting through an apertnre,6, in one of the sideflanges, 2. The flanged plate is provided at its center with a circularorifice, 7 ,in which are swiveled or j ournaled to rotatethe-ratchet-disk 8 and nut-cap 9, as we will now explain. The disk 8 ispro vided on its periphery with the ratchet-teeth,- and from one sideprojects a circular sleeve or hub, 10, located and adapted to rotate inthe circular orifice of the plate, the ratchet-disk bearing against theinside of the latter. The nut-cap 9 is placed at the outside of theplate, and is connected with the sleeve or hub of the ratchet-disk inany suitable manncr-as, for example, by screws or pins 11 entering thesleeve or hub, and having heads 12 engaging thebase 13 of the nut-cap.The pawl 4 engages the ratchet-disk and prevents its backward rotation,while permitting its free forward rotation for the purpose of tighteningup the nut 14: on the screw-bolt 15.

If the nut be hexagonal, the nutcap is furnished with a hexagonal cavityto receive it; but obviously where the nut is of other formas, forinstance, square or four-sided-thenutcap will be correspondingly formedto receive it, as in Fig. 5.

The ratchetdisk and nut-cap are provided with orifices to permit them topass onto the bolt, after which the nut is applied and entered into thenut-cap. The rotation of the nut in screwingit up rotates the nut-cap,and the lat ter in turn rotates the ratchet-disk until the nut isscrewed to the proper position,where it islocked by the pawl engagingthe ratchet-disk. The flanged plate during such movements of theratchet-disk and nut-cap remains stationary as regards any rotation,such plate simply advancing along the bolt. If it is desired to loosenor remove the nut for any purpose, the tail or finger piece of the pawlis operated to disengage the latter from the ratchet-disk, whenobviously the nut-cap and disk can be turned backward on the bolt.

WVhen the parts are in position to lock the nut in its position, theratchet-disk is inclosed and snow and dirt prevented from gaining accessthereto,which is important, in that the disk is preserved in correctworking order.

Obviously the nut-cap need not embrace or engage all sides of the nut,itonly being necessary to provide such a construction that the cap willengage the nut and be rotated when the nut is turned.

The nut-locking devices described can be applied to the fastening-boltsof ordinary fishplates and other objects without changing theconstruction of the latter, which isanimportant advantage over suchratchet-nut looks as require some specially-constructed device toengage'thefish-plate or other object to be secured.

The invention is applicable to nearly, if not all, places where a nut isto be locked on a screw-bolt.

Having thus described our invention, what we claim is- 1. Thecombination, in a nut-lock, of a Stationary flanged plate having acircular orifice, a

ratchet-disk and nut-cap located, respectively, on opposite sides of theplate,and rigidly connected together and swiveled to rotate in theorifice therein, and a pawl for engaging the ratchet, said nut-capreceiving within it the nut of the bolt, whereby the nut, cap, and diskrotate together, substantially as described.

2. The combination, in a nut-lock, of a stationary flan gcd plate havingacircular orifice, a ratchet-disk having a sleeve or hub rotatable insaid circular orifice, a nut-cap rigidly connected with the sleeve orhub, and a pawl for engaging the ratchet-disk, said nut-cap receivingwithin it the nut of thebolt, whereby the nut, cap, and disk rotatetogcther,substantiall y as described.

3. The combination, in a nut-lock, of a stationary plate having acircular orifice and edge flanges, one of which is provided with anaperture, and a pawl pivoted to the plate and 20 havinga tail or fingerpiece projecting through the aperture in the flange, with theratchetdisk and nut-cap located,respectively, at opposite sides of theplate, and rigidly connected together and swiveled to rotate in theorifice 25 therein, said nut-cap receiving within it the nut of thebolt,whereby the nut, cap, and disk rotate together, substantially asdescribed.

In testimony whereof we aflix our signatures in presence of twowitnesses.

PHILIP JACOB DAMBAOH. JOHN S. HANNAN.

\Vitnesses:

PATRICK F. CLARK, SOLOMON C. O. Srnnvnn.

